Elevator-gate.



I. C. BENNETT.

COLUMBIA PLANOGRAPH C0., WASHIN c.

JOSEPH CHARLES BENNETT, 0E TORONTO, ONTARIO, CANADA, AssIerNOE To oT'Is- EENSOM ELEVA'rO-nl COMPANY, LIMITED, OE TORONTO, OANADA.

ELEvATon-GATE.

Specification of Letters' Patent.

Patented oet. 12,1915.

Application fried April 24, 1915. Serial No. 23,592.

To @ZZ wit-0m t may concern: y

Be it knownthat 17,.,JosEri-r CHARLES BEN- NETT, of the city of Toronto, in. the coun-ty of York, in the Province oitl Ontario, Canada, have invented certain new and useful Improvements' in ElevatonGrates,v of which the following is the specification.

My invention relates to improvements in elevator gates and the object of the' invention is to devise a gate which will collapse vertically in ord-er to gine' sutlicient head room beneaththe gate when the' gate is raised toA the open position. in buildings constructed, with low ceilings a-nd it.- consists essenti-ally of an elevator gate comprising a plurality of bar members'sli-dably held at their ends; invertical guides,4 a counterweight support fior the gate connected tothe center bar member and a: criss-cross link connection. between the bars of, the gate adapted toL draw the bars together when the gate is raised and to hold thenr in a definite parallel position one to thefother as herein-after more particularly explained by the' following speci'cation. l l

Figure 1,. isa front eleva-tion of my gate shown in. the closed position and the usual guides therefor. Fig. 2,. is a similar View to Fig; 1 showing the gate in the Open position.

Fig. 3,. isa sectional plan view on line @0.-3/

Fig. 1.. K

In the dra-wingsl like letters of refer-ence indicate corresponding parts-in eachfigure. l and. 2 indicate the side posts'locatedl at each` side ofthe elevator shaft andr forming thev door opening.

3 indicates the floor level and 4 the ceiling level.y 4 l 5 and 6 indicate guiding bars and 7*7 indicate inwardly extending portions formed integral. withy eachy unperend, of the guiding bars and formingstopsfor the elevator gate when` it isfraisedt to the open. position.

8,. 8v indicate'pulleys journaled at the upper ends'of the side posts 1. andI 2. y

9 ind'cateicords extending over thepulleys 8 opposite. the ends of the cords being provided. with suitable counterweights" which l .are not. shown as= these are commonly employed in all elevator gates of this'type.,4

1'0 indicates the elevator gatecomprisingthe main crossbarsl, 1`2'and'13.

147.14' indicate guideways secured to the ends ofA the bar members 11, 12 and 1,3 and formed substantially U-shaped in section so as to extend to each side of the bars 5 and 6.

15 and 16 indicate slots formed in the bar member' 11 and extending longitudinally thereof and located in proximity to each end of the bar member.

V17 indicates a similar slot located intermedi-ately of the length of the bar member 11.

18 and 19 indicate slotsforined in the bar member 12v similar tothe slots 15- and 16.'

20 and 21 vindicate slots formed in the bar member 13 and also similar to theslots 15 and 16. The slots 16, 19 21 are arhingedg i-n vertical a'linement and the slots 15, 18` and- 20` are also arranged in-,vertical alinement. y 1

22l indicates a slot-formeel in the bar member -13 horizontal alinementwith the slots 20' and' 21 and located intermediatenoitl` the length of the bar' member between' the" slots 20F and 21.` f

23 and 24 indicate slots formed in the/bar I member 1=2 in horizontal alinemenytI with the slots 18 and 19, the slots23 and 2lbei-nglocated ati each side of the' center of the baiI member 12.

25 indicates-a lever bar.

26 indicates agbolt onwlrich the lever bar 25 is swung. The bolt 26" extends through the slot- 17 and is? freely secured therein-by a nut 28 so=as to permit of free movement of otally securedl to the bar 32 by a bolt; 35. The lower end, of the link bar member 34tis pivotally connected to one end of the lever bar 29a The lower end ofthelinlr' bar 33 33v and 34: indicate cross link members pivis connected tothe main bar member'l by v a bolt 36 extending freely through the slot 21.

37 indicates a link bar pivotally connected at its lower end to the upper end of the link bar 33 and at its upper end to one end of the lever bar 25. The link bar 37 is pivO-tally secured intermediately of its length to the bar member 31 by a bolt 37".

38 indicates a link bar swung on the bolt 37 X at its upper end and pivotally connected at its lower end to the upper end of the link bar 34 b v a bolt 38X extending freely through the slot 13 of the main bar member 12.

39 and 40 indicate cross links pivotally connected together and to the bar 31 by a bolt 41. The upper end of the link bar 40 is pivotally connected to the opposite end of the lever 25. rlhe upper end of the link bar 39 is connected to the main bar member 11 by a bolt 39X extending freely through the slot 16.

42 indicates a link bar pivotally connected intermediately of its length by a bolt 42X to the bar 32. The upper end of the link bar 42 is pivotally connected to the'link bar 39 by a bolt 43, the bolt 43 extending freely through the slot 24. The lower end of the link bar 42 is pivotally connected to the opposite end of the lever bar 29.

44 is a link bar swung at its lower end upon the bolt 42x and pivotally connected at its upper end by a bolt 45 to the lower end of the link bar 40, the bolt 45 extending freely through the slot 19 of the main bar member 12.

Having described the principal parts involved in my invention l will brieiiy describe the operation of the same. It will be understood that according to regulations in force controlling the construction of elevator gates that the height of the gate must be constructed a definite height in compliance with such regulations. In buildings constructed with low ceilings it is impossible to raise the gate to the required height sufficiently to allow head room beneath the gate when the gate is raised. ln order to overcome this defect and at the same time comply with the regulations in force I have constructed my gate so that when raised into position in proximity to .the ceilingv it will automatically collapse into the position shown in Fig. 2 of the drawings. When operating the device the gate is thrown upward by the hand of a person in proximity thereto. The gate fiies up until the upper main bar 11 strikes the stops 7. The counterweights descending in the usual manner draw upon the cords 9 giving an upward movement to the bar 12 so that immediately the bar 11 is brought to rest by contact with the stops 7 'the bar member 12 is carried upwardly toward the bar member 11 collapsing the links 37, 38, 39 and 40. These links adjust themselves in the slots 15, 16, 17, 18, 19, 23 and 24 so as to spread the upper ends of the links 33 and 34, 42 and 44 and thereby draw the bar member 13 upwardly toward the bar member 12 thereby drawing the gate into the collapsed position shown in Fig. 2. lt will also be seen that by constructing my device as above described that the bar members 11, 12 and 13 will be always held in a definite parallel position one to the other no matter whether the gate is thrown up by applying the hand to the center portion of the gate or to either of the end portions and thereby will prevent any liability of the gate to bind or jam in its guides when Vthrown upwardly to the collapsed position.

`What I claim as my invention is- 1. In an elevator gate, the combination with the side guides having a suitable stop at the top thereof, of a gate comprising a plurality of parallel main bars having longitudinal slots therein, intermediate bars located alternately between the aforesaid bars, a set of crossed links located at each side of the gate and pivotally connected to each intermediate bar at each end, bolts extending through the ends of the cross links and through the slots of the main bars, means independent of the bars of the gate for connecting the upper end of each set of crossed links together and the lower end of each set of crossed links together, and

lcounterweighted cords connected to the center bar of the gate.

2. 1n an elevator gate, the combination with the side guides having a suitable stop at the top thereof, of a gate comprising a plurality of parallel main bars having longitudinal slots therein, intermediate bars located alternately between the aforesaid bars, a set of cross links located at each side of the gate and pivotally connected to each intermediate bar, bolts extending through the ends of the cross links and through the slots of the main bars, and lever bars pivotally carried by the top and bottom bars of the gate for connecting the upper end of each set of cross links together and the lower end of each set of cross links together, and counterweighted cords located at each side of the gate and connected to the center bar of the gate.

3. In an elevator gate, the combination with the side guides having a stop at the upper end thereof, of an elevator gate com-,120 prising a plurality of main bars slidably supported on the side guides, the upper and lower bar of which is provided with longitudinal slots in proximity to each end thereof, and a longitudinal slot located intermediately of the length thereof and the center bar with longitudinal slots in proximity to each end thereof, and a pair of longitudinal slots bars, and center slot of the upper and lower of the oross links and the slots of the main main bars, intermediate cross bars located hars and a counterweighted cord connected alternately between the main bars, a series to the center main bar of the 0ate.

H of cross links connected to the ends of the JOSEPH CHARLES BENNETT. lever bars and pivotally connected inter- Witnesses: mediate of their length to the intermediate H. M. CHRISTMAN, bars, and bolts extending through the ends D. S. TOVELL.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents. Washington, D. C. 

